214428919 has 2 divisors, whose sum is σ = 214428920. Its totient is φ = 214428918.

The previous prime is 214428911. The next prime is 214428943. The reversal of 214428919 is 919824412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 214428919 - 2³ = 214428911 is a prime.

It is a super-2 number, since 2×214428919² = 91959522607017122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214428911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107214459 + 107214460.

It is an arithmetic number, because the mean of its divisors is an integer number (107214460).

Almost surely, 2^214428919 is an apocalyptic number.

214428919 is a deficient number, since it is larger than the sum of its proper divisors (1).

214428919 is an equidigital number, since it uses as much as digits as its factorization.

214428919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 40.

The square root of 214428919 is about 14643.3916494779. The cubic root of 214428919 is about 598.5417541065.

The spelling of 214428919 in words is "two hundred fourteen million, four hundred twenty-eight thousand, nine hundred nineteen".